diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 8e4be9c..8ffec67 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2272,11 +2272,12 @@
 	return ERR_PTR(-ENOMEM);
 }
 
-static void mem_cgroup_pre_destroy(struct cgroup_subsys *ss,
+static int mem_cgroup_pre_destroy(struct cgroup_subsys *ss,
 					struct cgroup *cont)
 {
 	struct mem_cgroup *mem = mem_cgroup_from_cont(cont);
-	mem_cgroup_force_empty(mem, false);
+
+	return mem_cgroup_force_empty(mem, false);
 }
 
 static void mem_cgroup_destroy(struct cgroup_subsys *ss,